かす

Etymology 1
Possibly from. First cited to the  of 934.

Noun

 * 1)   in sake production, the dregs or lees left over after extracting the liquid from the fermented rice mash
 * 2)   the sediment, impurities, dregs, or lees on the bottom of a container after a liquid has settled
 * 3)   anything left over after everything useful or good has been extracted
 * 4)    in, a one-point card, a garbage card
 * 5)    a scolding, terrible criticism
 * 1)    in, a one-point card, a garbage card
 * 2)    a scolding, terrible criticism
 * 1)    in, a one-point card, a garbage card
 * 2)    a scolding, terrible criticism
 * 1)    a scolding, terrible criticism

Derived terms

 * : “to eat the dregs” → to receive a scolding, to receive terrible criticism

Etymology 3
Any of various Chinese-derived terms.